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Shelly EM Mini Gen4 vs IAMMETER WEM3080

Install fit
Phase support Single-phase Single-phase
Installation Inline retrofit energy meter for wall boxes, sockets, and other tight single-phase spaces DIN-rail mounted energy meter with external split-core current transformer
Measurement Direct-wired single-phase inline energy meter for connected-device or branch-circuit consumption monitoring; no relay and no external CTs Single-phase bidirectional energy meter
Max current 16 A Unknown
Nominal voltage 110-240 V AC 80-265 VAC
Meter fit
Accuracy class ±1% voltage and current measurement accuracy Unknown
Current sensing Direct inline measurement up to 16 A; no external CTs 1 x split-core CT; 150A standard with 250A option on the official product page
Monitoring
Protocol Wi-Fi / Zigbee / Bluetooth / Matter / MQTT / HTTP / WebSocket / RPC / UDP Wi-Fi / HTTP API / MQTT / TCP / TLS
Local API Yes Yes
Cloud dependency Optional cloud; local operation supported. Optional cloud; IAMMETER-Cloud is available, but open APIs and third-party integrations are supported.
Home Assistant Yes Yes
Solar fit
Solar import/export No Yes
Buying context
Price range About EUR 19.99 / USD 24.99 from Shelly official stores during the 2026-05 review About USD 68-$88 depending on channel and timing
Availability EU official store / US official store / broader regional Shelly availability varies Global
Source check
Last verified May 25, 2026 May 18, 2026
Product page Official page Official page
Documentation Official docs Official docs
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